Authors:
James Lewis
Why do we keep talking about appropriate sample sizes for usability tests? Perhaps the most important factor is the economics of usability testing. For many practitioners, usability tests are fairly expensive events, with much of the expense in the variable cost of the number of participants observed (which includes cost of participants, cost of observers, cost of lab, and limited time to obtain data to provide to developers in a timely fashion). Excessive sampling is always wasteful of resources [9], but when the cost of an additional sample (in usability testing, an additional participant) is high, it is very…
You must be a member of SIGCHI, a subscriber to ACM's Digital Library, or an interactions subscriber to read the full text of this article.
GET ACCESS
Join ACM SIGCHIIn addition to all of the professional benefits of being a SIGCHI member, members get full access to interactions online content and receive the print version of the magazine bimonthly.
Subscribe to the ACM Digital Library
Get access to all interactions content online and the entire archive of ACM publications dating back to 1954. (Please check with your institution to see if it already has a subscription.)
Subscribe to interactions
Get full access to interactions online content and receive the print version of the magazine bimonthly.
Post Comment
No Comments Found